Gastroparesis (delayed gastric emptying) occurs when the stomach takes too long to empty out food—a disorder caused when the vagus nerve is damaged or otherwise stops working. There are many causes for gastroparesis; often, the condition is chronic.

One treatment for gastroparesis involves opening the valve at the lower end of the stomach (called the pylorus). This has traditionally required an open or laproscopic surgical procedure. But experts at Mass General are changing that through their use of POP: a technique that allows surgeons to open up the pylorus using only a gastroscope.  

Kumar Krishnan, MD, of the Department of Gastroenterology, and Elan Witkowski, MD, a minimally invasive surgeon in the Department of General and Gastrointestinal Surgery, jointly performed the POP procedure on three gastroparesis patients. All three underwent the procedure successfully.

Massachusetts General Hospital, founded in 1811, is the original and largest teaching hospital of Harvard Medical School. In August 2018 the hospital was once again named to the Honor Roll in the U.S. News & World Report list of "America's Best Hospitals."